Sergey Korsakov

Sergey Vladimirovich Korsakov is a Russian cosmonaut selected by Roscosmos in 2012. He was scheduled to make his first flight into space in April 2021 as a flight engineer aboard Soyuz MS-18 ahead of a stay aboard the International Space Station; but was replaced on the crew by Mark Vande Hei in March of that year. He was then assigned to Soyuz MS-21, which launched successfully March 18, 2022.